2555900 has 36 divisors (see below), whose sum is σ = 5650680. Its totient is φ = 1003200.

The previous prime is 2555897. The next prime is 2555911. The reversal of 2555900 is 95552.

It is a self number, because there is not a number n which added to its sum of digits gives 2555900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5891 + ... + 6309.

2^2555900 is an apocalyptic number.

2555900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2555900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2825340).

2555900 is an abundant number, since it is smaller than the sum of its proper divisors (3094780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2555900 is a wasteful number, since it uses less digits than its factorization.

2555900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 2555900 is about 1598.7182365883. The cubic root of 2555900 is about 136.7250064892.

The spelling of 2555900 in words is "two million, five hundred fifty-five thousand, nine hundred".